Update hostsfile and add zerotier cookbook

cookbooks/zerotier/templates/default/zerotier_ohai.rb

@@ -0,0 +1,71 @@
+
+Ohai.plugin(:ZeroTier) do
+    provides 'zerotier'
+
+    def zerotier_command (subcommand)
+        return "<%= @zerotier_binary %> <% unless @zerotier_binary.end_with?('-cli') %>-q<% end %> #{subcommand} -p<%= @control_port %> -D<%= @data_dir %>"
+    end
+
+    def linux_get_networks
+        networks = Mash.new
+        cmd = zerotier_command('listnetworks')
+        Ohai::Log.info(cmd)
+        so = shell_out(cmd)
+        first_line = true
+        so.stdout.lines do |line|
+            if first_line
+                # skip the header line
+                first_line = false
+                next
+            end
+
+            data = line.strip.split(/\s+/)
+
+            cur_network = Mash.new
+            cur_network[:network_name] = data[3]
+            cur_network[:mac] = data[4]
+            cur_network[:status] = data[5]
+            cur_network[:type] = data[6]
+            cur_network[:interface] = data[7]
+            cur_network[:addresses] = []
+
+            data[8].split(',').each do |addr|
+                cur_network[:addresses].push(addr)
+            end
+
+            networks[data[2]] = cur_network
+        end
+        return networks
+    end
+
+    def linux_get_node_id
+        node_id = ''
+
+        if ::File.exists?("<%= @data_dir %>/identity.public")
+            node_id = ::File.read("<%= @data_dir %>/identity.public")
+            node_id = node_id[0..9]
+            Ohai
+        else
+            Ohai::Log.warn("<%= @data_dir %>/identity.public' does not exist")
+        end
+
+        return node_id unless node_id.empty?
+    end
+
+    def get_version
+        so = shell_out("<%= @zerotier_binary %> -v 2>&1")
+        version = so.stdout.strip
+        return version unless version.empty?
+    end
+
+    collect_data(:linux) do
+        if ::File.exists?("<%= @zerotier_binary %>")
+            zerotier Mash.new
+            zerotier[:version]    = get_version
+            zerotier[:node_id]    = linux_get_node_id
+            zerotier[:networks]   = linux_get_networks
+        else
+            Ohai::Log.warn("Cannot find zerotier binary")
+        end
+    end
+end